The filename 'blog 2 february 172012' shows up in the metadata of Japanese cassette blogs from the early 2010s. It's not a release title or an artist name. It's a leftover from how collectors label digital copies of physical tapes. To understand what it means, you have to look at how people rip cassettes, how Japanese DIY labels number their releases, and how handwritten notes turn into searchable filenames.
Where the String Comes From
Most entries like this come from someone ripping a cassette and uploading the audio to a blog. The 'blog' prefix tells you the file was sitting in a blog's media folder. The date '2 february' is most likely the upload date, not the tape's release date. The number '172012' is the key: it's a catalog number or pressing code the collector copied from the cassette's J-card or obi strip.
Decoding 172012
Japanese underground labels don't use standard barcodes. They assign sequential numbers, often mixing a label prefix, year, and release number. '172012' could be read a few ways. A common pattern is YYMMRR — year, month, release number. '17' could be 2017, but '20' as month doesn't work. Or '2012' could be the year. More likely it's a flat sequential number: label X's 172nd release, with '012' as a sub-code for side or edition. Or it could be a misreading of handwritten digits where '1' is a label code and '72012' is July 2012.
This ambiguity is typical. The same string can mean different things depending on the label's system. Some use simple running numbers; others embed the year in the first two digits. The only way to confirm is to compare against known release sequences from that label. That's a skill collectors develop — discussed more in The Secret Language of Japanese Cassette Codes.
The Role of the Blog in Preservation
Blogs like the one that produced this filename act as de facto archives. The creators often work with limited metadata: a J-card scan, a photo of the cassette shell, and a brief listening note. The filename is the only structured data point. Over time, these filenames become the primary identifier in second-hand markets and database entries. A buyer searching for '172012' may find the blog post, but the actual tape might have a different catalog number on the physical object. The blog entry is a snapshot of one person's filing system, not the official discography.
Collectors should treat such entries as provisional. The date '2 february' is almost certainly the upload date, not the release date. The number '172012' may be a correct transcription or a typo — handwritten numbers on J-cards are often misread (e.g., '1' vs 'I', '7' vs '1'). Cross-referencing with other copies of the same tape, if any exist online, is the only reliable method.
Practical Steps for Identifying the Actual Release
- Search the number '172012' without the 'blog' prefix and date. Check whether it appears in any label discography list or database.
- Look at the blog's other entries. If the blog consistently uses the same numbering pattern, you can infer the label's catalog system from multiple examples.
- Compare the audio file's duration and sound quality against known releases. Field recordings and noise tapes often have unique sonic signatures that can confirm identity even without matching catalog numbers.
- Contact the original blogger if possible. Many early bloggers are still active on social media or forums and can clarify what the entry referred to.
Why the Entry Matters
Next time you find a filename like 'blog 2 february 172012', try searching just the number on Discogs or the label's website. Look for other blog posts from the same collector — they often use consistent patterns. If you're lucky, you'll trace it back to a specific tape. If not, you've at least documented a piece of the underground's messy history. The imperfections are clues, not bugs.